HOME VULNERABILITIESCVE-2026-59874

HIGH

CVE-2026-59874

CWE-835Published: July 8, 2026· Updated: Jul 10, 2026

7.5

CVSS v3.1

EPSS:0.29%probability of exploitation in 30 daysPercentile:20.9th

Official Description

node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.18, tar.replace accepts a checksum-valid tar header with a negative base-256 encoded entry size, causing the archive scanner to make no progress while repeatedly parsing the same header. This issue is fixed in version 7.5.18.

Technical Analysis

CVE-2026-59874 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

isaacs1 product(s)

tar

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/isaacs/node-tar/commit/9e78bf058b2c22dd4d52e00d8922d5c06fc2f7b5

ADVISORYhttps://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w

ADVISORYhttps://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w

All References (4)

→

https://github.com/isaacs/node-tar/commit/9e78bf058b2c22dd4d52e00d8922d5c06fc2f7b5Patch

→

https://github.com/isaacs/node-tar/releases/tag/v7.5.18Release Notes

→

https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5wExploit · Vendor Advisory

→

https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5wExploit · Vendor Advisory

Quick Facts

CVE IDCVE-2026-59874

CVSS Score7.5 / 10

SeverityHIGH

WeaknessCWE-835

CISA KEVNo

EPSS (30d)0.29%

Affected1 vendor(s)

PublishedJul 8, 2026

Related CVEs (CWE-835)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2026-59874 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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